How do I make all files/folders in/under usr folder permanently visible in Finder? [closed]

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How do I make all files/folders in/under usr folder permanently visible in Finder?

I know how to temporarily make the these folders visible from:

"Search" in Finder; type "usr"; select "Other" from menu "Kind"; type "invisible"; select "File Visiblity"; select "Invisible Items" from menu... But I really don't want to do that every time I am looking for a file in the usr-tree.

I have also tried to the following code in the terminal:

$defaults write com.apple.finder AppleShowAllFiles True
$killall Finder

Not only does this make all files visible, but I can't seem to be able to find the usr folder.

Does anyone know how I make only the usr-tree permanently visible?

Answer 1

If you must have access to /usr from the finder, probably the easiest way is to create a symbolic link to it. From a terminal session shell and using usrlink as an "alias":

sudo ln -s /usr /usrlink
sudo chmod -h 755 /usrlink

Then you should be able to see see the directories under /usr (which is filtered by the Finder) under /usrlink (which is not). But I really don't recommend doing this. It's too easy to mess /usr up inadvertently and, if you do, you're probably going to have to reinstall OS X. Also, . files will still be hidden without changing other preferences.